Guard for primer valves



y 9, 1939- 4 H. w. KLOSTERMAN 2,157,545

GUARD FOR PRIMER VALVES Filed May 17, 1937 INVENTOR.

H.W. KLOSTERMAN ATTORNEY.

Patented May 9, 1939 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates generally to the plumbing industry, and particularly to a guard for primer valves.

The main object of this invention is the provision of a simple and efiicient guard for preventing the formation of a closed connection between a primer valve and a floor drain trap.

The second object is to provide an improved form of connection between the valve and the trap which would prevent the splashing of water from the seal breaking opening.

I accomplish these and other objects in the manner set forth in the following specification as illustrated in the accompanying drawing, in

which:

Fig. 1 is a longitudinal section throu h the valve equipped with my guard showing a closed position with no water flowing through the valve.

Fig. 2 is a view similar to Fig. 1 showing the position of the valve parts when a faucet is bein opened.

Fig. 3 is a view similar to Fig. 2 but showing th position of the parts when the faucet is wide open.

Fig. 4 is a section taken along the line 44 in Fig. 3.

Fig. 5 is a fragmentary section of a modified form of the device taken along the line 5-5 in Fig. 6.

Fig. 6 is a transverse section taken along the line 66 in Fig. 5.

Fig. 7 is a perspective view of the modified form of guard shown in Figs. 5 and 6.

Fig. 8 is an assembled view showing the relation of the primer valve to the faucet and trap.

Similar numerals refer to similar parts throughout the several views.

Before entering into an explanation of this invention, attention is drawn to the patent of Bale No. 1,981,540, to which the present invention applies. It will be understood that the purpose of a primer valve is to insure the maintenance of a water seal in a floor drain trap. Plumbing codes require that the connection between the primer valve and the trap be open in order to prevent any possibility of contamination of the fresh water supply line. In order to insure this, one or more openings are made in the connection. between the primer valve and the floor drain trap. Experience, however, has indicated that such openings may easily become clogged or material may pass through these openings and fall into the fitting itself. In order to avoid these conditions, I have provided a special guard which will prevent obstructions from being placed in the opening or falling into same.

Referring in detail to the drawing, there is shown a body ID of a primer valve whose inlet opening II is connected to a fresh water supply 5 pipe I2 and whose outlet opening I3 is connected to a faucet M by means of a pipe l5. The openings H and I3 coimnunicate with the cylindrical chamber I6 by way of the ports I! and [8 which are offset with relation to each other. 1

Within the chamber I6 is a piston [9 to which is attached an elongated stem 20 on whose lower end is secured a washer 2|. The stem 20 is free to pass through an opening 22 in the wall 23 of the body l0. Formed in the body [0 is a meter- 15 ing chamber 24 into which the stem 20 projects.

At the lower end of the metering chamber 24 and screwed into the wall 25 is a nipple 26 which is provided with an axial opening 21 and lateral openings 28. The body [0 is provided with lat- 20 eral openings 29 which are disposed between the wall 25 and the lower end 30 of the nipple 2B.

The lower end 3| of the body I0 is preferably threaded to receive the union 32. The end 3| is connected by the union 32 to the pipe 33 which 25 communicates with the floor drain trap 34. It

is desirable to provide an opening 35 in the body I0 for drainage purposes. A groove 36 is also formed in the piston IS.

The operation of the valve is identical with the 30 operation of the valve described in the Bale Patent No. 1,981,540. Briefly, it is as follows:

When the faucet I4 is opened, the water entering the chamber 16 through the port I! causes the piston IE! to rise, as shown in Fig. 2, raising 35 the washer 2| from the seat 31 which is formed on the upper end of the nipple 26. A further upward movement of the piston [9, as shown in Fig.

3, permits the water to pass through the port IE to the faucet l4. The water which occupied the 40 metering chamber 24 is thereby allowed to escape through the opening 21 into the trap 34. It will be noted that the axis of the openings 28 is normal to the axis of the opening 29. In other words, while this does not afford visibility, it does insure a break in the connection. For construction purposes a threaded cap 38 is employed at the upper end of the chamber Hi.

In the form of the device shown in Figs. 5 to: 7, inclusive, instead of using the equivalent of the 50 nipple 26, I merely employ a band clamp 39 which encircles the reduced portion 40 of the body 4| and is held permanently in position by the pin 42 which is driven through the holes 42A into the hole 42B in the wall 43 of the body 4|.

The clamp 39 is provided with the holes 44 which are disposed between the openings 45 in the portion 43.

This form of guard is identical in its functioning with the form shown in Figs. 1 to 4, inclusive, it being the object in both cases to provide a guard which will prevent playful or accidental interference with the operation of the primer valve.

I claim:

A primer valve of the class described having a metering chamber formed within same, a nipple extending downwardly from said metering chamher, a Valve for controlling the flow of liquid through said nipple, a wall surrounding said nipple and spaced therefrom, said wall forming a means for connecting the discharge from said nipple to a sanitary system, said wall and nipple having lateral openings therein out of alinement with each other.

HARRY W. KLOSTERMAN. 

